pivot_root01 from ubuntu_ltp_syscalls failed on D-Oracle-5.0

[Po-Hsu Lin]

This issue can be reproduced with 5.0.0-1008.13-oracle, and the manually deployed 5.0.0-1005-oracle.

However, with the 5.0.0-1005.9-oracle regression testing report, this test was not failing by then, so it looks like a test case issue to me.

 tag=pivot_root01 stime=1573878599 dur=0 exit=exited stat=2 core=no cu=0 cs=0
 startup='Sat Nov 16 04:29:59 2019'
 tst_test.c:1217: INFO: Timeout per run is 0h 05m 00s
 tst_test.c:345: BROK: Child (28591) killed by signal SIGSEGV

 Summary:
 passed 0
 failed 0
 skipped 0
 warnings 0

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-1005-oracle 5.0.0-1005.9
ProcVersionSignature: User Name 5.0.0-1005.9-oracle 5.0.21
Uname: Linux 5.0.0-1005-oracle x86_64
ApportVersion: 2.20.10-0ubuntu27.1
Architecture: amd64
Date: Mon Nov 18 06:24:57 2019
SourcePackage: linux-signed-oracle
UpgradeStatus: No upgrade log present (probably fresh install)

segfault could be found in dmesg:
[ 7120.889866] LTP: starting pivot_root01
[ 7120.891280] pivot_root01[8039]: segfault at 0 ip 0000561a27e9e5d0 sp 00007ffc196d79a0 error 4 in pivot_root01[561a27e97000+11000]
[ 7120.891285] Code: e7 53 4c 89 cb 48 89 de 48 81 ec 38 04 00 00 64 48 8b 04 25 28 00 00 00 48 89 84 24 28 04 00 00 31 c0 4c 8b 8c 24 78 04 00 00 <f3> a6 0f 97 c0 1c 00 84 c0 0f 85 b1 00 00 00 b9 06 00 00 00 48 8d

[Po-Hsu Lin (cypressyew)]

Bisect shows this is ok until:
  ae52b6f4 (lib: Fix safe_mount() when mounting NTFS on kernels with NTFS support) [1]

But I can't tell why it has something to do this patch.

[1] https://github.com/linux-test-project/ltp/commit/ae52b6f41bf38da4a10e5fd7b036186d07cd17a1

[Po-Hsu Lin (cypressyew)]

More tests:
This test can pass on the same oracle instance by reverting commit ae52b6f4

[Po-Hsu Lin (cypressyew)]

Spotted on T-AWS 4.4

 tag=pivot_root01 stime=1574067646 dur=0 exit=exited stat=2 core=no cu=0 cs=0
 startup='Mon Nov 18 09:00:46 2019'
 tst_test.c:1217: INFO: Timeout per run is 0h 05m 00s
 tst_test.c:345: BROK: Child (17480) killed by signal SIGSEGV

 Summary:
 passed 0
 failed 0
 skipped 0
 warnings 0

[Po-Hsu Lin (cypressyew)]

Passed on B-AWS-5.0:
 startup='Sat Mar 7 01:19:10 2020'
 tst_test.c:1229: INFO: Timeout per run is 0h 05m 00s
 pivot_root01.c:158: PASS: pivot_root succeeded
 pivot_root01.c:173: PASS: pivot_root failed as expectedly: EBUSY (16)
 pivot_root01.c:173: PASS: pivot_root failed as expectedly: EINVAL (22)
 pivot_root01.c:173: PASS: pivot_root failed as expectedly: ENOTDIR (20)
 pivot_root01.c:173: PASS: pivot_root failed as expectedly: EPERM (1)

 Summary:
 passed 5
 failed 0
 skipped 0
 warnings 0
 tag=pivot_root01 stime=1583543950 dur=0 exit=exited stat=0 core=no cu=0 cs=0

[Po-Hsu Lin (cypressyew)]

Passed with B-oracle-5.0 (5.0.0-1013.18)

[Po-Hsu Lin (cypressyew)]

Passed with T-aws-4.4 (4.4.0-1064.68-aws)

I think this can be safely closed.